Definition - What does Pocket Calculator mean?
The Busicom LE-120A HANDY was the first real pocket-sized calculator, which was made in Japan and was marketed during early 1971.
Techopedia explains Pocket Calculator
A typical pocket calculator consists of the following:
- Input keypad: A keypad consisting of plastic keys, a rubber membrane as well as a touch-sensitive circuit below it
- Processor: The microchip that does all the computations
- Output screen: A liquid crystal display (LCD) to show the keyed-in digits and calculated output
- Power source: A long-life battery, now mostly small button batteries. Some calculators feature a solar cell to offer free power during daylight as well.